Kane Richmond

Jim Marsden

Kay Aldridge

Patricia Harding

Roy Barcroft

Carter / Kane

Clancy Cooper

Yank

Marshall Reed

Tommy (as Marshall J. Reed)

Oscar O'Shea

John Galbraith [Chs. 1, 7, 15]

Forrest Taylor

Dr. Oliver Harding [Chs. 1-4]

Hal Taliaferro

Lawson [Ch. 1, 6-7]

Edward Keane

Fredrick Vorhees [Ch. 1]

Spencer Gordon Bennet

Wallace Grissell